Due to the interaction between the Western Disturbance and the low level easterlies, hailstorms occurred at isolated places over Madhya Pradesh on 12th February, over Marathawada on 11th February, over Vidarbha on 12th & 13th February and over Chhattisgarh and Jharkhand on 13th February 2018 (As per the media reports). Widespread rain/snow with heavy precipitation at isolated places over the Western Himalayan Region and fairly widespread rainfall over plains of Northwest and Central India occurred between 0830 hours IST of 11th and 0830 hours IST of 13th February 2018. Light Rainfall also occurred at a few over parts of Eastern India between 0830 hours IST of 12th and 0830 hours IST of 14th February 2018. Rainfall also occurred over peninsular India during 0830 hours IST of 11th and 0830 hours IST of 14th February.
Last week’s trough at mean sea level which moved westwards caused heavy rainfall at isolated places over Tamil Nadu & Puducherry and Rayalaseema between 0830 hours IST of 7th and 0830 hours IST of 08th February.
Thunderstorms occurred at isolated places over Jammu & Kashmir, Himachal Pradesh, Punjab, Haryana, Rajasthan, Uttarakhand, Uttar Pradesh, Madhya Pradesh, Marathawada, Vidarbha, Chhatisgarh and Odisha between 11th & 12th February.
FOG & COLD WAVE
Due to the interaction of western disturbance and low level easterlies, dense fog has not occurred over northwestern India. However cold wave conditions prevailed over parts of northwestern India from 8-10 February 2018.
Dense to very dense fog observed at isolated places over eastern sub-Himalayan West Bengal & Sikkim, Odisha, Jharkhand, Madhya Pradesh, Nagaland, Manipur, Mizoram & Tripura on one/two days of the week.
Cold wave/severe cold wave conditions prevailed at isolated places over Telangana, and north interior Karnataka on many days of the week.
During the week lowest minimum temperature of 0.1°C was recorded on 10th February 2018 at Pant Nagar (Uttarakhand) in the plains of the country.
During the week the lowest maximum temperature of 15.6°c was recorded on 07th February 2018 at Hardoi (east Madhya-Uttar Pradesh) in the plains of the country.

Cumulative rainfall sub-division wise for the week (08-14 February 2018) predicted by IMD GFS model shows that few sub-divisions of northwestern India, central India, eastern India and most of the sub-divisions of peninsular India would receive excess rainfall, whereas most sub-divisions of central India and peninsular India received excess rainfall. The model has under predicted rainfall over northwestern India. Rainfall was over predicted over Gujarat, Konkan & Goa, Madhya Maharashtra and Lakshadweep. Overall model has predicted well for 20 out of 36 sub-divisions of the country.

During the week, rainfall over the country as a whole was 76 per cent above the long period average (LPA) due to good amount of precipitation. Due to the interaction between western disturbance passing through the western Himalayan region and low level easterlies out of the four broad homogeneous regions, only three received excess rainfall and only eastern & northeastern regions received deficient rainfall. Details of rainfall distribution over the four broad homogeneous regions of India are given below:

For the country as a whole, cumulative rainfall was (-58 per cent) of LPA as on 14th February 2018. Cumulative rainfall was normal over the southern peninsula. Rainfall was excess over Andaman & Nicobar islands; Marathawada, Vidarbha, south interior Karnatala and Kerala; normal over east Madhya Pradesh and Rayalaseema; deficient over Arunachal Pradesh, Punjab, Jammu & Kashmir, Chhattisgarh, north interior Karnataka, Tamil Nadu & Puducherry and Lakshadweep. The other sub-divisions received largely deficient / no rainfall as over the rest of the sub-divisions of the country. Details of rainfall distribution over the four broad homogeneous regions of India are given below: